Cut-off mechanism for vapor heating apparatus



.(NQ Model.)

J. S. HULL. GUT-OPF MBGHANISM FOR VAPOR HEATING APPARATUS'.

No. 269,576. Patented Deo. 26,1882.

i UNITED STATES -ATENT OFFICE.,

JOHBT S. HULL, OF BALTIMORE, MARYLAND.

SPECIFICATION forming part of Letters Patent No. 269,576, dated December26, 1.882.

Application tiled October 18, 1882. (No model.)

To all whom it muy concern Be it known that I, JOHN S. HULL, a citizenof the United States, residing at Baltimore, Maryland,haveinventedcertain new and useful Improvements in Out-off Mechanism i'or VaporHeating Apparatus,'ot' which the following is a specification, referencebeing had to the accompanying drawings, forming part hereof, in which-`Figure l is view partly in section and partly in elevation, showing myinvention. Figs. 2, 3, and 4 are 'detail views.

Like letters niarkthe same parts in all the figures.

ble or bench, A. a are branch pipes leading to the burners A2, forheating said fire-pots. The particular construction of these pots andburners may be varied as may be desired.

B is a main supply-pipe,leading from a tank, C, containing thefluid-supply. This supplypipe furnishes `oil to the burners underpressure, and is set at angle inelining slightly downward from theburner to the tank, for a purpose to be described.

D is an air-pump, which forces air through a pipe, d, to an air-tank, E,from which the air passes through a pipe, F, to the supply-tank C. Thecompressed air passinginto this tank causes the oil to pass from thetank to the burners.

Gr is a pipeleading from the waste-tank H. h is a branch pipe leadingfrom the pipe F to the tank H, and Kis a pipe leading from the mainsupply-pipe to the tank H. The pipe B is provided with a cut-off valve,b, and a threeway valve, b', the pipe d with a valve, d', the pipe Fwith two valves, ff', the pipe G with a valve, g, and the pipe l1l withavalve, h', the uses of which will be hereinafter described.`

I is a vent-valve mounted upon the tank H, and is shown in detail inFig. 2. y

The three-way valve b is illustrated in two positions in Figs. 3 and 4.b2 is a lever pivoted to the stem of said valve, and carries a weight,b3. This weightis held npin theposition shown in Fig. l by a string, b4,passing over pulleys b5, overhead or in front ofthe workman using thefire-pots. When itis desired to supply the fire-pots with fluid the pumpis operated,coin pressing the airin the tank E. The valves bffv A A aretinners fire-pots, mounted on a ta-b being open, the compression of theair in the tank forces it through the pipeFinto the supply-tank C,forcing the Huid therefrom through the pipe B to the burners, which heatthe lirepots. When, by reason ot' any accident, it is desired tosuddenly shut ott the supply the string b4 is cut, allowing the weightZ13-and lever b2 to drop, turning the three-way valve to the positionshown in Fig. 4. This cuts oli'the supply from the. tank U through pipeB, and causes the flame at the burners to be extinguished, and at thesaine time opens a way through the three-way valve for whatever oilthere may be in the pipes to pass down through pipe K to the tank H,leaving pipes clear. W'hen it is desired to employ the waste-tank thevalve f is closed and the valves g and h opened. The compressed air inthe tank E will now pass from thence to the tank H through the pipes F,and force the uid con-v tained in the tank H into the supply-tank C,from whence it will be again forced into the burners. The vent-val ve Imust also be closed while forcing the iiuid out ofthe ta-nk H.

The string b4 may be an ordinary twine or any kind of smallwiresuitableforthe`purpose.

My cut-oli" apparatus is here shown in conneetion with tinners7tire-pots; but I desire to say that its use is not restricted to thisapplication. The means lemploy, as here described, may he used inconnection with any devices wherein vapor-burners are employed.

Y Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent of the United States, is-

1. The combination, substantially as described, of a series of burners,a branch supply-pipe for each, a main supply-pipe set atan inclinationand having branches leading to a supply-tank, a valve, b', and means foroperating it, and a tank for receiving the waste oil, as set forth.

2. The combination, substantially as described,ot' a series of burners,a branch pipe for each, a main supply-pipe set at an inclination, athree-way valve therein, and a pipeA leading therefrom to a waste-tank,whereby the supply of oil may be cut and the wasteway opened by one andthe same operation, as set forth.

3. The combination of the main supply-pipe,

IOO

set at an inclination, the pipe to the wastetank, the three-way valve attheirjunction, a Weighted lever attached to said valve, and means fordropping said lever to cut ofi' the supply and open the wasteway, as setforth.V

4. The combination, substantially as described, of the seriesot'burners, a branch pipe for each, an inclined snpplyfpipe, theWastetank, the three-way valve, its Weighted lever, and the stringattached thereto and suspended above the heads of the Workmen.

5. The combination of an air-pump, an airt-ank, a pipe, F, leading fromthe air-tank to the supply-tank, a branch, h, therefrom to theWaste-tank, and a pipe, G, connecting the waste-tank with thesupply-tank, the pipes being arranged as shown and supplied Withsuitable valves, whereby the air is forced directly into the supply-tankor through the Waste-V JOHN S. HULL.

In presence of- S. BRASHEARS, JN0. T. MADDOX.

